Joint for metal window sash frames



Filed May 5, 1947 Rd m mm an vw. a fait NG 44 H Y R Hf 4 .ww m f V J Mm A A u 2 mi" lm /V m Y u m Wn.. :2.1M: 2 1. EIM

Patented July 20, 1948 Nair; stares ceram? n: 2,445,42s

JOINT Fon ME'rAn WINDOW SASHFRAMES Harry;l H. Goldberg, nenmensnlb- 'Application May; 19 47,.S.i=..ral;il3`n.. 754631.30

(Cl. 28d-95545)? 1 Claim. 1

This invention relates to improvements in joints; between members.- Qfmeta-1; window Sash frames. creasingly popular andmany. improvements are being made in regard thereto.

The;.usual metal window; sash are conste-noted;

from either: steel. bars.; or aluminum bars.-` and these hasta heretofore a. general rule,1 been mined. by; means.. of.. welding.. Although: welding is; quite; satisfactory for. the; production on a good joint between steel frame members, it is not so desirable or satisfactory when used in connection with the present extruded aluminum frame members.

It is the object of this invention to produce an improved method and an improved joint for interconnecting extruded aluminum window sash members which will dispense with Welding and at the same time produce a rigid and lasting joint or connection.

In order to explain this invention so that it may be readily understood, reference will now be had to the accompanying drawing in which the joint and the method of forming the same have been illustrated, and in which:

Figure 1 is a perspective view showingr two window sash members, of usual construction, interconnected, the View showing the parts after the joint has been made;

Figure 2 is a view partly in top plan and partly in section taken on line 2 2, Figure 1;

Figure 3 is an end elevation looking in the direction of arrow 3, in Figure 2;

Figure 4 is a section taken on line 4 4, Figure 2; and

Figure 5 is a diagrammatic view showing a portion of a window sash.

Referring now to the drawing, reference numeral l designates one of the vertical window sash members and reference numeral I| designates a transverse window sash member of usual extruded aluminum construction. In Figure the several sash members have been shown interconnected and glass panes I2 positioned in place therein.

For the purpose of this description, the sash frame member I ll will be considered as extending vertically when viewed as in Figure 5, although the angular relation with the horizon is, of course, immaterial, but this supposition is made for the purpose of facilitating the description.

It will be observed that member Ill has oppositely extending anges i3 and I4, which are interconnected by means of a hollow web formed Metal window sash are becomingy inf.,

2; fromtwo spaced'webs IEE; Betweenv the hanged andgtheinnerfsurfaces of thewebs is a rectane. gular opening'- IG'; rlhe upper surface ofi` flangef I3 serves as @support for the-windowf pane;

Frame member I-|f isl constructed in aslig-thlydifferent manner, hayinga lower flange I'IfiaridT an upperflange I8# andspacedwebs H9.'A In this, structural form; weby I1" extends equal distances to opposite sideslofthe webA andthe same is true- Qf-iiange I'B; leaving'a pane; supporting-surface that cooperatesV with theA corresponding surface of flange I3.

Referring now more particularly to Figure 2, it will be observed that webs I5 are provided with rectangular openings |5a extending the entire distance between the opposing surfaces of flanges I3 and I4 and whose width is equal to the distance between the inner surfaces of webs I9. Flange II is cut back along line 20 to such an extent that the ends of webs I9 engage the sur- Aface of adjacent web I5 of member I0. A rectangular pin or connector, which has been designated by reference numeral 2|, is provided at one end with a head having flanges 22 projecting from opposite sides thereof. Pin 2| is of the same size and shape as the opening between webs I9, as shown more particularly in Figure 4. Pin 2| is also provided on opposite sides with grooves 23. Flange I8 of member II is cut back to such an extent that its end engages the adjacent edge of flange I4 along line 24, as shown in Figure l. After the end of member II has been cut back, as shown, it is positioned against the web of member IIJ so that the openings in webs I5 are in alignment with the opening between webs I9. Pin 2| is now inserted and the parts forced together by means of some suitable device so as to be held firmly and rigidly. When the parts are thus assembled and supported, Webs I9 are subjected to the action of a tool which bends them inwardly as indicated at 25, the inner surface of the bent portions extending into grooves 23. The interconnection between the inwardly bent surfaces and the edges of grooves 23 serve to hold the parts rigidly and rmly in assembled position. Due to the fact that flanges I'I and I8 abut against the edges of anges |13 and I4, the parts remain rigid and the joint is therefore more desirable than a welded joint because the surfaces remain smooth as distinguished from a welded joint where the molten metal makes them irregular. As before mentioned, a welded aluminum joint is not a1- ways dependable, whereas, a joint constructed in accordance with this invention is as strong as 3 the pin by means of which the parts are interconnected.

In the construction shown, frame member I is formed with webs l5 spaced apart. Of course it is immaterial so far as this particular method of joining two members together is concerned, whether or not the web is solid or form-ed by two spaced Webs, as illustrated in the drawing. Instead of the interconnection comprising the grooves 23 and the inwardly bent portion 25, it is possible to drill a hole through these members and interconnect them by means of a. rivet in a manner in which similar members are ordiv brace member Il to prevent its tilting relativeto the other member.

Having described the invention what is claimed as new is:

In a window sash comprising two frame members, each of which has two parallel flanges spaced apart and interconnected by Webs, in

which one frame member is connected with the other in substantially right angular relation and 21 in which one of the members has a tubular web, the flanges on the last mentioned member being cut back to permit the ends of the web to engage the adjacent side of the web on the other member while the cut back ends of the flanges abut the edges of the nanges on the other member, the web on said other member having an opening of the same size and shape as the opening in the tubular web, a. headedpin extending through the hole in the Web and into the registering opening in the tubular web, and means for interconnecting the pin with the tubular web to resist forces tending to produce relative longitudinal movement, the ends of the cut back flanges, in their abutting relation to the edges of the ilanges on the other member, serving to resist forces tending to move the members aneularly.

HARRY H. GOLDBERG.

REFERENCES CITED The'following references are of record 

